{"id":729,"date":"2023-03-23T21:50:23","date_gmt":"2023-03-23T13:50:23","guid":{"rendered":""},"modified":"2023-03-23T21:50:23","modified_gmt":"2023-03-23T13:50:23","slug":"Java \u6570\u7ec4","status":"publish","type":"post","link":"https:\/\/bianchenghao6.com\/729.html","title":{"rendered":"Java \u6570\u7ec4"},"content":{"rendered":"


\n <\/head>
\n <\/p>\n

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Java \u6570\u7ec4<\/h1>\n<\/p><\/div>\n
\n \u901a\u5e38\uff0c\u6570\u7ec4\u662f\u5177\u6709\u8fde\u7eed\u5185\u5b58\u4f4d\u7f6e\u7684\u76f8\u4f3c\u7c7b\u578b\u5143\u7d20\u7684\u96c6\u5408\u3002\n <\/div>\n
\n Java\u6570\u7ec4<\/strong>\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u5176\u4e2d\u5305\u542b\u76f8\u4f3c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u6b64\u5916\uff0c\u6570\u7ec4\u7684\u5143\u7d20\u5b58\u50a8\u5728\u8fde\u7eed\u7684\u5b58\u50a8\u4f4d\u7f6e\u4e2d\u3002\u8fd9\u662f\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\uff0c\u6211\u4eec\u5728\u5176\u4e2d\u5b58\u50a8\u76f8\u4f3c\u7684\u5143\u7d20\u3002\u6211\u4eec\u53ea\u80fd\u5728Java\u6570\u7ec4\u4e2d\u5b58\u50a8\u4e00\u7ec4\u56fa\u5b9a\u7684\u5143\u7d20\u3002\n <\/div>\n
\n Java\u4e2d\u7684\u6570\u7ec4\u662f\u57fa\u4e8e\u7d22\u5f15\u7684\uff0c\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u5b58\u50a8\u5728\u7b2c0\u4e2a\u7d22\u5f15\uff0c\u7b2c2\u4e2a\u5143\u7d20\u5b58\u50a8\u5728\u7b2c\u4e00\u4e2a\u7d22\u5f15\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002\n <\/div>\n
\n \u4e0eC\/C ++\u4e0d\u540c\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528length\u6210\u5458\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u5728C\/C ++\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u4f7f\u7528sizeof\u8fd0\u7b97\u7b26\u3002\n <\/div>\n
\n \u5728Java\u4e2d\uff0c\u6570\u7ec4\u662f\u52a8\u6001\u751f\u6210\u7684\u7c7b\u7684\u5bf9\u8c61\u3002 Java\u6570\u7ec4\u7ee7\u627f\u4e86Object\u7c7b\uff0c\u5e76\u5b9e\u73b0\u4e86Serializable\u4ee5\u53caCloneable\u63a5\u53e3\u3002\u6211\u4eec\u53ef\u4ee5\u5c06\u539f\u59cb\u503c\u6216\u5bf9\u8c61\u5b58\u50a8\u5728Java\u6570\u7ec4\u4e2d\u3002\u50cfC\/C ++\u4e00\u6837\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u5728Java\u4e2d\u521b\u5efa\u5355\u7ef4\u6216\u591a\u7ef4\u6570\u7ec4\u3002\n <\/div>\n
\n \u6b64\u5916\uff0cJava\u63d0\u4f9b\u4e86C\/C ++\u4e2d\u4e0d\u53ef\u7528\u7684\u533f\u540d\u6570\u7ec4\u529f\u80fd\u3002\n <\/div>\n

Java \u6570\u7ec4_https:\/\/bianchenghao6.com_\u3010Java \u57fa\u7840\u6559\u7a0b\u3011_\u7b2c1\u5f20 <\/p>\n

\u4f18\u52bf<\/h3>\n

\u4ee3\u7801\u4f18\u5316<\/strong>: \u5b83\u4f7f\u4ee3\u7801\u5f97\u4ee5\u4f18\u5316\uff0c\u6211\u4eec\u53ef\u4ee5\u9ad8\u6548\u5730\u68c0\u7d22\u6216\u6392\u5e8f\u6570\u636e\u3002<\/span>
\n \u968f\u673a\u8bbf\u95ee<\/strong>: \u6211\u4eec\u53ef\u4ee5\u83b7\u5f97\u4f4d\u4e8e\u7d22\u5f15\u4f4d\u7f6e\u7684\u4efb\u4f55\u6570\u636e\u3002<\/span> <\/p>\n

\u7f3a\u70b9<\/h3>\n

\u5927\u5c0f\u9650\u5236: <\/strong>: \u6211\u4eec\u53ea\u80fd\u5728\u6570\u7ec4\u4e2d\u5b58\u50a8\u5143\u7d20\u7684\u56fa\u5b9a\u5927\u5c0f\u3002\u5b83\u4e0d\u4f1a\u5728\u8fd0\u884c\u65f6\u589e\u52a0\u5176\u5927\u5c0f\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5728Java\u4e2d\u4f7f\u7528\u4e86\u6536\u96c6\u6846\u67b6\uff0c\u8be5\u6846\u67b6\u4f1a\u81ea\u52a8\u589e\u957f\u3002<\/span> <\/p>\n

\n

<\/p>\n

java\u4e2d\u7684\u6570\u7ec4\u7c7b\u578b<\/h3>\n
\n \u6709\u4e24\u79cd\u7c7b\u578b\u7684\u6570\u7ec4\u3002\n <\/div>\n

\u5355\u7ef4\u6570\u7ec4<\/span>
\n \u591a\u7ef4\u6570\u7ec4<\/span> <\/p>\n

\n

Java\u4e2d\u7684\u5355\u7ef4\u6570\u7ec4<\/h2>\n
\n \u58f0\u660eJava\u4e2d\u7684\u6570\u7ec4\u7684\u8bed\u6cd5<\/strong>\n <\/div>\n
\n
 dataType[] arr;
 (or)dataType []arr;
 (or)dataType arr[];
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n   \u7528Java\u5b9e\u4f8b\u5316\u6570\u7ec4<\/strong>\n  <\/div>\n
\n
 arrayRefVar=new datatype[size];
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
 Java\u6570\u7ec4\u7684\u793a\u4f8b<\/h3>\n
\n    \u8ba9\u6211\u4eec\u770b\u4e00\u4e0bJava\u6570\u7ec4\u7684\u7b80\u5355\u793a\u4f8b\uff0c\u5728\u8be5\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u58f0\u660e\uff0c\u5b9e\u4f8b\u5316\uff0c\u521d\u59cb\u5316\u548c\u904d\u5386\u6570\u7ec4\u3002\n  <\/div>\n
\n
 \/\/Java Program to illustrate how to declare, instantiate, initialize
 \/\/and traverse the Java array.
 class <\/span>Testarray{
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>a[]=new int[5];
         \/\/declaration and instantiationa[0]=10;
         \/\/initializationa[1]=20;
         a[2]=70;
         a[3]=40;
         a[4]=50;
         \/\/traversing arrayfor(int <\/span>i=0;i<a.length;i++)
         \/\/length is the property of arraySystem.out.println<\/span>(a[i]);
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 1020704050
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n
 Java\u6570\u7ec4\u7684\u58f0\u660e\uff0c\u5b9e\u4f8b\u5316\u548c\u521d\u59cb\u5316<\/h2>\n
\n    \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u4e00\u8d77\u58f0\u660e\uff0c\u5b9e\u4f8b\u5316\u548c\u521d\u59cb\u5316Java\u6570\u7ec4:\n  <\/div>\n
\n
 int <\/span>a[]={33,3,4,5};
 \/\/declaration, instantiation and initialization
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u6253\u5370\u6b64\u6570\u7ec4\u7684\u7b80\u5355\u793a\u4f8b\u3002\n  <\/div>\n
\n
 \/\/Java Program to illustrate the use of declaration, instantiation
 \/\/and initialization of Java array in a single line
 class <\/span>Testarray1{
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>a[]={33,3,4,5};
         \/\/declaration, instantiation and initialization
         \/\/printing arrayfor(int <\/span>i=0;i<a.length;i++)
         \/\/length is the property of arraySystem.out.println<\/span>(a[i]);
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 33345
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u7528\u4e8eJava\u6570\u7ec4\u7684For-each\u5faa\u73af<\/h2>\n
\n    \u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528
\n   for-each\u5faa\u73af\u6765\u6253\u5370Java\u6570\u7ec4<\/strong>\u3002 Java for-each\u5faa\u73af\u9010\u4e00\u6253\u5370\u6570\u7ec4\u5143\u7d20\u3002\u5b83\u5728\u53d8\u91cf\u4e2d\u5305\u542b\u4e00\u4e2a\u6570\u7ec4\u5143\u7d20\uff0c\u7136\u540e\u6267\u884c\u5faa\u73af\u7684\u4e3b\u4f53\u3002\n  <\/div>\n
\n    for-each\u5faa\u73af\u7684\u8bed\u6cd5\u5982\u4e0b:\n  <\/div>\n
\n
 for(data_type variable:array){
 \/\/body of the loop
 } <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u4f7f\u7528for-each\u5faa\u73af\u6253\u5370Java\u6570\u7ec4\u5143\u7d20\u7684\u793a\u4f8b\u3002\n  <\/div>\n
\n
 \/\/Java Program to print <\/span>the array elements using for-each loop
 class <\/span>Testarray1{
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>arr[]={33,3,4,5};
         \/\/printing array using for-each loop
         for(int <\/span>i:arr)System.out.println<\/span>(i);
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 33345
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n
\u5728Java\u4e2d\u5c06\u6570\u7ec4\u4f20\u9012\u7ed9\u65b9\u6cd5<\/h2>\n
\n    \u6211\u4eec\u53ef\u4ee5\u5c06Java\u6570\u7ec4\u4f20\u9012\u7ed9\u65b9\u6cd5\uff0c\u4ee5\u4fbf\u6211\u4eec\u53ef\u4ee5\u5728\u4efb\u4f55\u6570\u7ec4\u4e0a\u91cd\u7528\u76f8\u540c\u7684\u903b\u8f91\u3002\n  <\/div>\n
\n    \u8ba9\u6211\u4eec\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u4ee5\u4f7f\u7528\u4e00\u79cd\u65b9\u6cd5\u6765\u83b7\u53d6\u6700\u5c0f\u6570\u91cf\u7684\u6570\u7ec4\u3002\n  <\/div>\n
\n
 \/\/Java Program to demonstrate the way of passing an array
 \/\/to method.
 class <\/span>Testarray2{
     \/\/creating a method which receives an array as a parameter
     static void <\/span>min(int <\/span>arr[]){
         int <\/span>min=arr[0];
         for(int <\/span>i=1;i<arr.length;i++) if<\/span>(min>arr[i]) min=arr[i];
         System.out.println<\/span>(min);
     }
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>a[]={33,3,4,5};
         \/\/declaring and initializing an arraymin(a);
     \/\/passing array to method}
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 3
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
 Java\u4e2d\u7684\u533f\u540d\u6570\u7ec4<\/h2>\n
\n    Java\u652f\u6301\u533f\u540d\u6570\u7ec4\u7684\u529f\u80fd\uff0c\u56e0\u6b64\u60a8\u65e0\u9700\u5728\u5c06\u6570\u7ec4\u4f20\u9012\u7ed9\u65b9\u6cd5\u65f6\u58f0\u660e\u6570\u7ec4\u3002\n  <\/div>\n
\n
 \/\/Java Program to demonstrate the way of passing an anonymous array
 \/\/to method.
 public <\/span>class <\/span>TestAnonymousArray{
     \/\/creating a method which receives an array as a parameterstatic void <\/span>    printArray(int <\/span>arr[]){
         for(int <\/span>i=0;i<arr.length;i++)System.out.println<\/span><\/span><\/span>(arr[i]);
     }
     public <\/span>static void <\/span>main(String args[]){
         printArray(new int[]{10,22,44,66});
     \/\/passing anonymous array to method}
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 10224466
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u4ece\u65b9\u6cd5\u4e2d\u8fd4\u56de\u6570\u7ec4<\/h2>\n
\n    \u6211\u4eec\u8fd8\u53ef\u4ee5\u5728Java\u4e2d\u4ece\u65b9\u6cd5\u4e2d\u8fd4\u56de\u6570\u7ec4\u3002\n  <\/div>\n
\n
 \/\/Java Program to return <\/span>an array from the method
 class <\/span>TestReturnArray{
     \/\/creating method which returns an arraystatic <\/span>int[] get(){
         return new <\/span>int[]{
         10,30,50,90,60}
         ;
     }
     public <\/span>static void <\/span>main(String args[]){
         \/\/calling method which returns an arrayint <\/span>arr[]=get();
         \/\/printing the values of an array
         for(int <\/span>i=0;i<arr.length;i++)
             System.out.println<\/span><\/span><\/span>(arr[i]);
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 1030509060
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
 ArrayIndexOutOfBoundsException <\/h2>\n
\n    \u5982\u679c\u904d\u5386\u6570\u7ec4\u65f6\u6570\u7ec4\u7684\u957f\u5ea6\u4e3a\u8d1f\u6570(\u7b49\u4e8e\u6570\u7ec4\u5927\u5c0f\u6216\u5927\u4e8e\u6570\u7ec4\u5927\u5c0f)\uff0c\u5219Java\u865a\u62df\u673a(JVM)\u629b\u51faArrayIndexOutOfBoundsException\n  <\/div>\n
\n
 \/\/Java Program to demonstrate the case <\/span>of
 \/\/ArrayIndexOutOfBoundsException in a Java Array.
 public <\/span>class <\/span>TestArrayException{
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>arr[]={50,60,70,80};
         for(int <\/span>i=0;i<=arr.length;i++){
             System.out.println<\/span>(arr[i]);
         }
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 Exception in thread \"main\"<\/span> java.lang.ArrayIndexOutOfBoundsException: 4 at TestArrayException.main<\/span>(TestArrayException.java:5)50607080
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n
 Java\u4e2d\u7684\u591a\u7ef4\u6570\u7ec4<\/h2>\n
\n    \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6570\u636e\u5b58\u50a8\u5728\u57fa\u4e8e\u884c\u548c\u5217\u7684\u7d22\u5f15\u4e2d(\u4e5f\u79f0\u4e3a\u77e9\u9635\u5f62\u5f0f)\u3002\n  <\/div>\n
\n   \u4f7f\u7528Java\u58f0\u660e\u591a\u7ef4\u6570\u7ec4\u7684\u8bed\u6cd5<\/strong>\n  <\/div>\n
\n
 dataType[][] arrayRefVar;
 (or)dataType [][]arrayRefVar;
 (or)dataType arrayRefVar[][];
 (or)dataType []arrayRefVar[];
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n   \u5728Java\u4e2d\u5b9e\u4f8b\u5316\u591a\u7ef4\u6570\u7ec4\u7684\u793a\u4f8b<\/strong>\n  <\/div>\n
\n
 int[][] arr=new int[3][3];
 \/\/3 row and 3 column
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n   \u5728Java\u4e2d\u521d\u59cb\u5316\u591a\u7ef4\u6570\u7ec4\u7684\u793a\u4f8b<\/strong>\n  <\/div>\n
\n
 arr[0][0]=1;
 arr[0][1]=2;
 arr[0][2]=3;
 arr[1][0]=4;
 arr[1][1]=5;
 arr[1][2]=6;
 arr[2][0]=7;
 arr[2][1]=8;
 arr[2][2]=9;
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u591a\u7ef4Java\u6570\u7ec4\u7684\u793a\u4f8b<\/h3>\n
\n    \u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u58f0\u660e\uff0c\u5b9e\u4f8b\u5316\uff0c\u521d\u59cb\u5316\u548c\u6253\u53702Dimensional\u6570\u7ec4\u7684\u7b80\u5355\u793a\u4f8b\u3002\n  <\/div>\n
\n
 \/\/Java Program to illustrate the use of multidimensional array
 class <\/span>Testarray3{
     public <\/span>static void <\/span>main(String args[]){
         \/\/declaring and initializing 2D arrayint <\/span>arr[][]={
             {1,2,3},{2,4,5},{4,4,5}};
         \/\/printing 2D array
         for(int <\/span>i=0;i<3;i++){
             for(int <\/span>j=0;j<3;j++){
                 System.out.print<\/span>(arr[i][j]+\" \"<\/span>);
             }
             System.out.println<\/span>();
         }
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 1 2 32 4 54 4 5
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
 Java\u4e2d\u7684\u952f\u9f7f\u72b6\u6570\u7ec4<\/h2>\n
\n    \u5982\u679c\u6211\u4eec\u57282D\u6570\u7ec4\u4e2d\u521b\u5efa\u5947\u6570\u5217\uff0c\u5219\u79f0\u4e3a\u952f\u9f7f\u72b6\u6570\u7ec4\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u662f\u5177\u6709\u4e0d\u540c\u5217\u6570\u7684\u6570\u7ec4\u7684\u6570\u7ec4\u3002\n  <\/div>\n
\n
 class TestJaggedArray{ 
     public <\/span>static void <\/span>main(String[] args){ 
         \/\/declaring a 2D array with odd columns 
         int arr[][] = new <\/span>int[3][]; 
         arr[0] = new <\/span>int[3]; 
         arr[1] = new <\/span>int[4]; 
         arr[2] = new <\/span>int[2]; 
         \/\/initializing a jagged array 
         int count = 0; 
         for <\/span>(int i=0; i<arr.length; i++) 
             for(int j=0; j<arr[i].length; j++) 
                 arr[i][j] = count++; 
  
         \/\/printing the data of a jagged array 
         for <\/span>(int i=0; i<arr.length; i++){ 
             for <\/span>(int j=0; j<arr[i].length; j++){ 
                 System.out.print<\/span>(arr[i][j]+\" \"<\/span>); 
             } 
             System.out.println<\/span><\/span>();\/\/new line 
         } 
     } 
 } 
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 0 1 2 3 4 5 6 7 8
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n
 Java\u6570\u7ec4\u7684\u7c7b\u540d\u662f\u4ec0\u4e48\uff1f<\/h2>\n
\n    \u5728Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u5bf9\u8c61\u3002\u5bf9\u4e8e\u6570\u7ec4\u5bf9\u8c61\uff0c\u5c06\u521b\u5efa\u4e00\u4e2a\u4ee3\u7406\u7c7b\uff0c\u8be5\u4ee3\u7406\u7c7b\u7684\u540d\u79f0\u53ef\u4ee5\u901a\u8fc7\u5bf9\u8c61\u4e0a\u7684getClass()\u3002getName()\u65b9\u6cd5\u83b7\u5f97\u3002\n  <\/div>\n
\n
 \/\/Java Program to get the 
 class <\/span>name of array in Java
 class <\/span>Testarray4{
     public <\/span>static void <\/span>main(String args[]){
         \/\/declaration and initialization of arrayint <\/span>arr[]={
         4,4,5}
         ;
         \/\/getting the class <\/span>name of Java arrayclass <\/span>c=arr.getClass<\/span>();
         String name=c.getName<\/span>();
         \/\/printing the class <\/span>name of Java array System.out.println<\/span>(name);
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 I
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n
\u590d\u5236Java\u6570\u7ec4<\/h2>\n
\n    \u6211\u4eec\u53ef\u4ee5\u901a\u8fc7System\u7c7b\u7684arraycopy()\u65b9\u6cd5\u5c06\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u3002\n  <\/div>\n
\n   \u8bed\u6cd5arraycopy\u65b9\u6cd5<\/strong>\n  <\/div>\n
\n
 public <\/span>static void <\/span>arraycopy(Object src, int <\/span>srcPos,Object dest, int <\/span>destPos, int <\/span>length)
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u5728Java\u4e2d\u590d\u5236\u6570\u7ec4\u7684\u793a\u4f8b<\/h3>\n
\n
 \/\/Java Program to copy a source array into a destination array in Java
 class <\/span>TestArrayCopyDemo {
     public <\/span>static void <\/span>main(String[] args) {
         \/\/declaring a source array char[] copyFrom = {
         'd'<\/span><\/span>, 'e'<\/span><\/span><\/span>, 'c'<\/span>, 'a'<\/span><\/span>, 'f'<\/span><\/span>, 'f', 'e', 'i'<\/span>, 'n'<\/span>, 'a', 't'<\/span>, 'e', 'd' }
         ;
         \/\/declaring a destination array char[] copyTo = new <\/span>char[7];
         \/\/copying array using System.arraycopy<\/span>() method System.arraycopy<\/span>(copyFrom, 2, copyTo, 0, 7);
         \/\/printing the destination array System.out.println<\/span>(String.valueOf<\/span>(copyTo));
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 caffein
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n
\u4f7f\u7528Java\u514b\u9686\u6570\u7ec4<\/h2>\n
\n    \u7531\u4e8eJava\u6570\u7ec4\u5b9e\u73b0\u4e86Cloneable\u63a5\u53e3\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u521b\u5efaJava\u6570\u7ec4\u7684\u514b\u9686\u3002\u5982\u679c\u6211\u4eec\u521b\u5efa\u4e00\u7ef4\u6570\u7ec4\u7684\u514b\u9686\uff0c\u5b83\u5c06\u521b\u5efaJava\u6570\u7ec4\u7684\u6df1\u5c42\u526f\u672c\u3002\u8fd9\u610f\u5473\u7740\u5b83\u5c06\u590d\u5236\u5b9e\u9645\u503c\u3002\u4f46\u662f\uff0c\u5982\u679c\u6211\u4eec\u521b\u5efa\u591a\u7ef4\u6570\u7ec4\u7684\u514b\u9686\uff0c\u5b83\u5c06\u521b\u5efaJava\u6570\u7ec4\u7684\u6d45\u8868\u526f\u672c\uff0c\u8fd9\u610f\u5473\u7740\u5b83\u5c06\u590d\u5236\u5f15\u7528\u3002\n  <\/div>\n
\n
 \/\/Java Program to clone the array
 class <\/span>Testarray1{
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>arr[]={
         33,3,4,5}
         ;
         System.out.println<\/span>(\"Printing original array:\"<\/span>);
         for(int <\/span>i:arr)System.out.println<\/span>(i);
         System.out.println<\/span>(\"Printing clone of the array:\"<\/span>);
         int <\/span>carr[]=arr.clone<\/span>();
         for(int <\/span>i:carr)System.out.println<\/span>(i);
         System.out.println<\/span>(\"Are both equal?\"<\/span>);
         System.out.println<\/span>(arr==carr);
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 Printing original array:33345Printing clone of the array:33345Are both equal?false
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u5728Java\u4e2d\u6dfb\u52a02\u4e2a\u77e9\u9635<\/h2>\n
\n    \u8ba9\u6211\u4eec\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u8be5\u793a\u4f8b\u5c06\u4e24\u4e2a\u77e9\u9635\u76f8\u52a0\u3002\n  <\/div>\n
\n
 \/\/Java Program to demonstrate the addition of two matrices in Java
 class <\/span>Testarray5{
     public <\/span>static void <\/span>main(String args[]){
         \/\/creating two matricesint <\/span>a[][]={
             {
             1,3,4}
             ,{
             3,4,5}
         }
         ;
         int <\/span>b[][]={
             {
             1,3,4}
             ,{
             3,4,5}
         }
         ;
         \/\/creating another matrix to store the sum of two matricesint <\/span>c[][]=new int[2][3];
         \/\/adding and printing addition of 2 matricesfor(int <\/span>i=0;i<2;i++){
             for(int <\/span>j=0;j<3;j++){
                 c[i][j]=a[i][j]+b[i][j];
                 System.out.print<\/span>(c[i][j]+\" \"<\/span>);
             }
             System.out.println<\/span>();
         \/\/new line}
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 2 6 86 8 10
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
 Java\u4e2d2\u4e2a\u77e9\u9635\u7684\u4e58\u6cd5<\/h2>\n
\n    \u5728\u77e9\u9635\u4e58\u6cd5\u7684\u60c5\u51b5\u4e0b\uff0c\u7b2c\u4e00\u4e2a\u77e9\u9635\u7684\u5355\u884c\u5143\u7d20\u4e58\u4ee5\u7b2c\u4e8c\u4e2a\u77e9\u9635\u7684\u6240\u6709\u5217\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7ed9\u51fa\u7684\u56fe\u50cf\u6765\u7406\u89e3\u3002\n  <\/div>\n
  Java \u6570\u7ec4_https:\/\/bianchenghao6.com_\u3010Java \u57fa\u7840\u6559\u7a0b\u3011_\u7b2c2\u5f20 <\/p>\n
\n    \u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u8fd9\u4e2a\u4f8b\u5b50\u5c06\u4e24\u4e2a3\u884c3\u5217\u7684\u77e9\u9635\u76f8\u4e58\u3002\n  <\/div>\n
\n
 \/\/Java Program to multiply two matrices
 public <\/span>class <\/span>MatrixMultiplicationExample{
     public <\/span>static void <\/span>main(String args[]){
         int <\/span>a[][]={{1,1,1},{2,2,2},{3,3,3}};
         int <\/span>b[][]={{1,1,1},{2,2,2},{3,3,3}};
         int <\/span>c[][]=new int[3][3];
         \/\/3 rows and 3 columns
         for(int <\/span>i=0;i<3;i++){
             for(int <\/span>j=0;j<3;j++){
                 c[i][j]=0;
                 for(int <\/span>k=0;k<3;k++) {
                     c[i][j]+=a[i][k]*b[k][j];
                 }
                 System.out.print<\/span>(c[i][j]+\" \"<\/span>);
             }
             System.out.println<\/span>();
         }
     }
 }
 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\n    \u8f93\u51fa:\n  <\/div>\n
\n
 6 6 6 
 12 12 12
 18 18 18 <\/span><\/code><\/pre>\n<\/p><\/div>\n
\u76f8\u5173\u4e3b\u9898<\/h3>\n
  Java\u5c06\u4e00\u4e2a\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4<\/span>
\n  Java\u67e5\u627e\u6570\u7ec4\u4e2d\u6bcf\u4e2a\u5143\u7d20<\/span>
\n  Java\u5411\u5de6\u65cb\u8f6c\u6570\u7ec4\u7684\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u6570\u7ec4\u7684\u91cd\u590d\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u6570\u7ec4\u7684\u5143\u7d20<\/span>
\n  Java\u4ee5\u76f8\u53cd\u7684\u987a\u5e8f\u6253\u5370\u6570\u7ec4\u7684\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u51fa\u73b0\u5728\u5076\u6570\u4f4d\u7f6e\u7684\u6570\u7ec4\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u51fa\u73b0\u5728\u5947\u6570\u4f4d\u7f6e\u7684\u6570\u7ec4\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u6570\u7ec4\u4e2d\u6700\u5927\u7684\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u6570\u7ec4\u4e2d\u7684\u6700\u5c0f\u5143\u7d20<\/span>
\n  Java\u6253\u5370\u6570\u7ec4\u4e2d\u5b58\u5728\u7684\u5143\u7d20\u6570<\/span>
\n  Java\u6253\u5370\u6570\u7ec4\u4e2d\u6240\u6709\u9879\u7684\u603b\u548c<\/span>
\n  Java\u5411\u53f3\u65cb\u8f6c\u6570\u7ec4\u7684\u5143\u7d20<\/span>
\n  Java\u4ee5\u5347\u5e8f\u5bf9\u6570\u7ec4\u7684\u5143\u7d20\u8fdb\u884c\u6392\u5e8f<\/span>
\n  Java\u4ee5\u964d\u5e8f\u5bf9\u6570\u7ec4\u7684\u5143\u7d20\u8fdb\u884c\u6392\u5e8f<\/span>
\n  Java\u67e5\u627e\u6570\u7ec4\u4e2d\u7684\u7b2c3\u5927\u6570\u5b57<\/span>
\n  Java\u67e5\u627e\u6570\u7ec4\u4e2d\u7684\u7b2c2\u5927\u6570\u5b57<\/span>
\n  Java\u67e5\u627e\u6570\u7ec4\u4e2d\u6700\u5927\u7684\u6570\u5b57<\/span>
\n  Java\u67e5\u627e\u6570\u7ec4\u4e2d\u7684\u7b2c2\u4e2a\u6700\u5c0f\u6570\u5b57<\/span>
\n  Java\u67e5\u627e\u6570\u7ec4\u4e2d\u7684\u6700\u5c0f\u6570\u5b57<\/span>
\n  Java\u5220\u9664\u6570\u7ec4\u4e2d\u7684\u91cd\u590d\u5143\u7d20<\/span>
\n  Java\u4ece\u6570\u7ec4\u6253\u5370\u5947\u6570\u548c\u5076\u6570<\/span>
\n  \u5982\u4f55\u7528Java\u5bf9\u6570\u7ec4\u6392\u5e8f<\/span>
\n <\/body>
\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Java \u6570\u7ec4zh-cn","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[111],"tags":[],"class_list":["post-729","post","type-post","status-publish","format-standard","hentry","category-java-jichu"],"_links":{"self":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/729"}],"collection":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/comments?post=729"}],"version-history":[{"count":0,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/729\/revisions"}],"wp:attachment":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/media?parent=729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/categories?post=729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/tags?post=729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}