关于string.split(",") -优快云博客

本文通过多个示例详细解析了Java中使用split方法进行字符串分割的过程及结果。针对空字符串、包含逗号的不同字符串进行了测试，并展示了如何获取分割后的各部分及其长度。

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String ss1 = "";
String ss2 = ",";
String ss3 = "a,b,";
String ss4 = "a,b,c";
String ss5 = "1,,123";
String ss6 = ",123,";
System.out.println("ss1长度:"+ss1.split(",").length);
for (int a = 0; a < ss1.split(",").length; a++) {
    System.out.print("  index:"+a+" 值:"+ss1.split(",")[a]);
}
System.out.println("");
System.out.println("======================");
System.out.println("ss2长度:"+ss2.split(",").length);
for (int a = 0; a < ss2.split(",").length; a++) {
    System.out.print("  index:"+a+" 值:"+ss2.split(",")[a]);
}
System.out.println("");
System.out.println("======================");
System.out.println("ss3长度:"+ss3.split(",").length);
for (int a = 0; a < ss3.split(",").length; a++) {
    System.out.print("  index:"+a+" 值:"+ss3.split(",")[a]);
}
System.out.println("");
System.out.println("======================");
System.out.println("ss4长度:"+ss4.split(",").length);
for (int a = 0; a < ss4.split(",").length; a++) {
    System.out.print("  index:"+a+" 值:"+ss4.split(",")[a]);
}
System.out.println("");
System.out.println("======================");
System.out.println("ss5长度:"+ss5.split(",").length);
for (int a = 0; a < ss5.split(",").length; a++) {
    System.out.print("  index:"+a+" 值:"+ss5.split(",")[a]);
}
System.out.println("");
System.out.println("======================");
System.out.println("ss6长度:"+ss6.split(",").length);
for (int a = 0; a < ss1.split(",").length; a++) {
    System.out.print("  index:"+a+" 值:"+ss6.split(",")[a]);
}
System.out.println("");
System.out.println("======================");
>》》》》>》>》》》输出

ss1长度:1
  index:0 值:
======================
ss2长度:0

======================
ss3长度:2
  index:0 值:a  index:1 值:b
======================
ss4长度:3
  index:0 值:a  index:1 值:b  index:2 值:c
======================
ss5长度:3
  index:0 值:1  index:1 值:  index:2 值:123
======================
ss6长度:2
  index:0 值:
======================

String ss1 = "";
String ss2 = ",";
String ss3 = "a,b,";
String ss4 = "a,b,c";
String ss5 = "1,,123";
String ss6 = ",123,";