core java in java questions asked in companies

– Uniary ++, –, +, -, |, ~, () – Arithmetic *, /, %,+, – -Shift <<, >>, >>> – Comparison =, instanceof, = =,!=Bitwise &, ^, |Short Circuit &&, || Ternary ?:Assignment = In Java, operators are special symbols or keywords that perform operations on operands. There are several types of operators in Java, … Read more

: No No, both System.gc() and Runtime.gc() in Java do not guarantee garbage collection. These methods suggest to the JVM (Java Virtual Machine) that it would be a good time to perform garbage collection, but the decision to actually perform garbage collection is ultimately left to the JVM’s discretion. The JVM is free to ignore … Read more

The runtime system keeps track of the memory that is allocated and is able to determine whether that memory is still useable. This work is usually done in background by a low-priority thread that is referred to as garbage collector. When the gc finds memory that is no longer accessible from any live thread it … Read more

This operator gives the value which is related to the remainder of a divisione.g x=7%4 gives remainder 3 as an answer In Java, arguments are passed by value. This means that when you pass a primitive data type or an object reference as an argument to a method, a copy of the value is passed, … Read more

This operator gives the value which is related to the remainder of a divisione.g x=7%4 gives remainder 3 as an answer. In Java, the modulo operator % is used to find the remainder of the division operation between two numbers. It is often referred to as the “remainder operator.” The syntax is as follows: java … Read more