今天早上突然想起来java中有个key word叫this,以前都没怎么注意,于是写下帮助记忆。
package org.iteye.bbjava.thistest;
public class ThisTest {
private String thisStr="The key word 'this'!";
public ThisTest(){
}
//this引用构造方法
public ThisTest(String thisStr){
this();
this.thisStr=thisStr;//特别指出,当前使用的是实列变量,而不是静态变量或局部变量。
}
public ThisTest(UseThisTest utt){
System.out.println("Hello!my name is "+utt);
}
//
public void test(){
System.out.println(this.thisStr);
System.out.println("The key word 'this' in the ThisTest class: "+this);
}
//返回当前实列
public ThisTest returnMyself(){
return this;
}
public static void main(String []args){
ThisTest tt=new ThisTest();
tt.test();
System.out.println("returnMyself:"+tt.returnMyself());
}
}
output
引用
The key word 'this'!
The key word 'this' in the ThisTest class: org.iteye.bbjava.thistest.ThisTest@de6ced
returnMyself:org.iteye.bbjava.thistest.ThisTest@de6ced
package org.iteye.bbjava.thistest;
public class UseThisTest {
private ThisTest tt = new ThisTest();
public void test(){
System.out.println("Do nothing!");
}
public void callTest(){
ThisTest utt1 = new ThisTest(this);//把当前对象作为参数传传递。
this.tt.test();
System.out.println("The key word 'this' in the UseThisTest class:"+this);
}
public static void main(String []args0){
UseThisTest utt = new UseThisTest();
utt.test();
utt.callTest();
}
}
output:
引用
Do nothing!
Hello!my name is org.iteye.bbjava.thistest.UseThisTest@c17164
The key word 'this'!
The key word this in ThisTest:org.iteye.bbjava.thistest.ThisTest@1fb8ee3
The key word 'this' in the UseThisTest class:org.iteye.bbjava.thistest.UseThisTest@c17164
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