What does [...] in java mean?

... represents a variable-length parameter, which means that any number of parameters of this type can be passed into this position. Simply put, it is an array.

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Code sample:

1. testPoints(7);  
2.        testPoints(7,9,11);  
3.        testPoints(new Integer[]{7,9,11});  
1.  public static void testPoints(Integer... itgr){  
2.        if(itgr.length==0){  
3.            System.out.println("没有Integer参数传入！");  
4.        }else if(itgr.length==1){  
5.            System.out.println("1个Integer参数传入！");  
6.        }else{      
7.            System.out.println("the input string is-->");  
8.            for(int i=0;i<itgr.length;i++){  
9.                System.out.println("第"+(i+1)+"个Integer参数是"+itgr[i]+";");  
 
1.1个Integer参数传入！  
2.the input string is-->  
3.第1个Integer参数是7;  
4.第2个Integer参数是9;  
5.第3个Integer参数是11;    
6.the input string is-->  
7.第1个Integer参数是7;  
8.第2个Integer参数是9;  
9.第3个Integer参数是11;

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