Which of the following can be placed in the blank line in the following code? public class Test { private int id; public void m1() { ________.id = 45; } } Group of answer choicesthisTestselfThis
Question
Which of the following can be placed in the blank line in the following code? public class Test { private int id; public void m1() { ________.id = 45; } } Group of answer choicesthisTestselfThis
Solution
The correct answer is "this". In Java, "this" is a reference variable that refers to the current object. Here is how you can use it:
public class Test {
private int id;
public void m1() {
this.id = 45;
}
}
"this" is used to refer to the current class instance variable. If there is a ambiguity between instance variables and local variables, "this" keyword is used to refer to the current class instance variable.
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