Java 字符串为[][]的越界异常错误
尝试打印二维字符串数组时,我收到一条错误消息:Java 字符串为[][]的越界异常错误,java,arrays,eclipse,multidimensional-array,indexoutofboundsexception,Java,Arrays,Eclipse,Multidimensional Array,Indexoutofboundsexception,尝试打印二维字符串数组时,我收到一条错误消息: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2 at MainClass.main(MainClass.java:51) 这是我的阵列: String[][] list = { {"1",null}, {"2",null}, {"3",null}, {"4",null}, {"5",null}, {
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
at MainClass.main(MainClass.java:51)
这是我的阵列:
String[][] list = {
{"1",null},
{"2",null},
{"3",null},
{"4",null},
{"5",null},
{"6",null},
{"7",null},
{"8",null},
{"9",null},
{"10",null},
{"11",null},
{"12",null},
{"13",null},
{"14",null},
{"15",null}
};
我就是这样把它打印出来的:
for( int row=0; row<list.length; row++) {
for( int col=0; col<list.length; col++) {
System.out.print(list[row][col] + "\t"); //this is MainClass:java:51 where the error is happenin
}
System.out.println();
}
for(int row=0;rowcolcol为什么要用null初始化数组中每行的第二个元素?它只是一个占位符。为什么要用null初始化数组中每行的第二个元素?它只是一个占位符。