ArrayIndexOutOfBoundsException: 数组下标越界异常NullPointerException: 空引用异常ClassNotFoundException: 类没有发现异常NumberFormatException: 数字格式异常 (字符串不能转化为数字)Try: 尝试Catch: 捕捉Finally: 最后Throw: 抛出Throws: (投掷) 表示强制异常处理Throwable:(可抛出的) 表示所有异常类的祖先类Lang:lang...
You can also declare an array of arrays (also known as amultidimensionalarray) by using two or more sets of brackets, such asString[][] names. Each element, therefore, must be accessed by a corresponding number of index values. In the Java programming language, a multidimensional array is ...
//Declare an array inta[][] =newint[3][5]; //Define an array int[][]b = { {1,2,3}, {4,5}//缺省自动补0 }; //Traverse an array for(inti=0;i<2;i++){ for(intj=0;j<3;j++){ System.out.println(b[i][j]); } } 字符类型 单个字符是种特殊的类型:char 单引号表示字符...
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You can either use array declaration or array literal (but only when you declare and affect the variable right away, array literals cannot be used for re-assigning an array). For primitive types: int[] myIntArray = new int[3]; // each element of the array is initialised to 0 int[] ...
(); } // Display the array for ( int i = 9; i = 0; i--) { System.out.println(num[i]); } } } 7.2 附加 public class Exercise07_02Extra { public static Scanner input = System.out.print( double x[] = double y[] = void main(String[] args) { new Scanner(System.in); ...
Static: select this checkbox, if you want to declare static import for the selected class. Package: in the text fields of this column, specify the packages and classes to be always imported completely. Note that IntelliJ IDEA automatically adds .* at the end of the package name once you fi...
In this example, we declare an array, fill it with data and then print the contents of the array to the console. int[] numbers = new int[5]; We create an integer array which can store up to 5 integers. So we have an array of five elements, with indexes 0..4. numbers[0] = ...
Static: select this checkbox, if you want to declare static import for the selected class. Package: in the text fields of this column, specify the packages and classes to be always imported completely. Note that IntelliJ IDEA automatically adds .* at the end of the package name once you fi...
A Java keyword used to declare a loop that will iterate a block of statements. The loop's exit condition can be specified with the while keyword. DOM Document Object Model. A tree of objects with interfaces for traversing the tree and writing an XML version of it, as defined by the W3...